Creating a new External Data connection
When creating a new External Data connection, you'll need to know the provider you want to use to connect to your data and the type of authentication you want to use.
Additionally, there are advanced properties that can be used to limit table/schema access and simplify longer table/schema names.
Client connections
Client connections are private connections that can only be used by the user who created the connection. Private reports that use this connection can be published to others, but the other users would need have a client connection with the same name for the report to work.
Authentication
DAS supports 2 different authentication types for client connections, Provider and OAuth 2.0.
Provider Authentication
This type of authentication uses the authentication method as defined by the configuration specified by the data provider.
OAuth 2.0 Authentication
OAuth 2.0 uses modern authentication methodologies which can include multi-factor support. Additional configuration settings are required for this type of authentication. See Creating an External Data connection using modern authentication
Other connection options
In addition to the options above, you can see other options such as Data Source selection, bit-ness and adding tables for home page searching. (See Other External Data options)